Just Freddie talking up a good game, getting the fans worked up for the concert, the same way he'd say things like, "Do you like my claws? They're real diamonds, a present from the Devil himself!" Back then, that was the sort of things bands did, like Alice Cooper claiming things like the name of the band came from either a witch or a the ghost of a murdered (or murdering) little girl (I've heard a few variations on that).

It all came down to "check it out, we're bad-ass and different and outrageous!" It was all part of the theatrics, like Ziggy Stardust, and KISS make-up, etc.